Archive of ‘Science8’ category

Grade 8 coordination biology

We have been looking at muscles and movement. Here is a copy of the textbook part that goes with this unit. (You should have a paper copy also).

Now that you can describe how muscles work and joints and bones function in your body, we need to look at the systems that control your movement : the nervous system.

Find out a bit about the brain and your nervous system here at KidsHealth or here at this revision site.

See the brainpop videos on the nervous system. (Nervous system, spinal cord, neurons)

Don’t forget to practice  your juggling regularly and keep track in your notebook.

We are going to do an experiment on coordination, reflexes and response times. We will collect common data and then you will choose the appropriate data for your experiment.

HERE IS A STUDY AID for your upcoming test on this unit.

You have one other task in this topic – to explain clearly a factor about the brain and learning that would be useful for a grade 8 student.

Global travel

In pairs or threes, please discuss:

  • how do we travel?
  • Do you consider how long it takes to get somewhere when you decide how you travel?
  • What other factors do you think about when you decide to travel? (this could be to a friend’s house, to the shop, or on vacation, for example).
  • What kinds of information do you need, before you make a decision? Where do you get this information?

THEN go to your blog, and using the ideas from this unit, from your Global Travel worksheet, and from your discussion, write a paragraph that shows the key ideas you have thought about and/or what you have considered about speed and travel in today’s world.

When you are finished, please get a peer in class to comment on your blog post. Useful, thoughtful, constructive commentary please. Show a parent or relative later today or this week, and ask them to comment.

Our NEXT unit is on Human Biology: Muscles, bones and nerves. We will be considering how these systems interact. What do you know about this? WHat would you like to know? Make a list in your notebook to show in class next time.  If you have time, consider the following:

On BrainPop, login through your school gmail, and then go to any of:

  • Human body (all systems go!)
  • Nervous system
  • Muscles
  • Joints
  • Spinal cord

Watch the video, and try the quiz at the end of each one. Send the score to Your Teacher’s Google Account (

Space – the final frontier

Where are we in the Universe? How do we know? How do we measure distances and account for planetary motion?

Welcome to our very small blue dot of a planet in the vastness of space.

How far are we from the Sun? How long would it take to get to Neptune? How far away is the Moon?

Take a look with this cool simulation!

(You can check out Bill Nye’s model of this too, or another man’s version here)

Afterwards, we will discuss some ideas about travelling through space.

Then, we will take a look at this orbital simulator that plots the motion of planets and gives you data on them. CLICK THROUGH THE TUTORIAL FIRST. We will work in teams to answer the questions at the end.

Review of acid, base and neutralization

Before the break, we looked at acids and alkalis (bases in solution) and how to measure their strength with indicators and the pH scale.

Here is a text that talks about this information.
Page 1 (read this)

Page 2 (read this too)

Page 3 (answer the questions in the box on the left, writing the answers in your notebook please)

Now, watch a Brainpop video by logging into Drive and accessing Brainpop from the menu. Then go to the video on pH scale and complete the quiz after the video.
IF you have time, go to the Acids and Bases video and do that quiz as well.

There is also cool interactive ‘lab’ that you click through under games. Search for pH. It comes in two parts – you do the pH scale and calibration part first, and then the Acidifying Salsa part. This may be helpful for our next lab.

Acids and Bases in your life

We are going to test common substances for their acidity and alkalinity (basicity) or level on the pH scale.

After doing this activity in class, you will reflect on what types of substances are usually acidic and which ones are basic.

Once you have completed this, please read the following page on acids, alkalis and the pH scale.

Answer the questions at the bottom right of the page (on a yellow box) in your notebook please.

Typhoon day amusements for Grade 8 scientists

Dear Grade 8,

While you are staying safe and dry at home, imagine your metals… I wonder which metal is best for a typhoon shelter??
Please make sure your Metal investigation science report is clear, scientific and impressively complete according to the rubric (TSC) for Criterion B and C.

When you think it is done or by the end of class time Monday, whichever comes first, please change the sharing settings so that anyone in the school can COMMENT on it, and put the link to the file here.

See you soon,

Mrs Harrison

Metals content review – part one

Today in class you will be in a random study group to answer a set of questions about metals and their reactions.
If you did not finish, please try to finish before next Tuesday (Oct 7) when we will discuss them again.

Here are the questions. (Sorry they are sideways.)

On Friday you will collect all your experiment data and analyze it, to make a conclusion.
On Monday Oct 6 you will write your evaluation and then turn in your report.
On Tuesday Oct 7 we will review for the quiz/test, and make sure you understand the material in this unit.
On Monday Oct 13 you have a small quiz/test for this unit.

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